tdesktop/Telegram/SourceFiles/chat_helpers/emoji_suggestions_widget.cpp

864 lines
22 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "chat_helpers/emoji_suggestions_widget.h"
#include "chat_helpers/emoji_keywords.h"
#include "core/core_settings.h"
#include "core/application.h"
#include "emoji_suggestions_helper.h"
#include "ui/effects/ripple_animation.h"
#include "ui/widgets/shadow.h"
#include "ui/widgets/inner_dropdown.h"
#include "ui/widgets/input_fields.h"
#include "ui/emoji_config.h"
#include "ui/ui_utility.h"
#include "platform/platform_specific.h"
#include "core/application.h"
#include "base/event_filter.h"
#include "main/main_session.h"
#include "app.h"
#include "styles/style_chat_helpers.h"
#include <QtWidgets/QApplication>
#include <QtGui/QTextBlock>
namespace Ui {
namespace Emoji {
namespace {
constexpr auto kShowExactDelay = crl::time(300);
constexpr auto kMaxNonScrolledEmoji = 7;
constexpr auto kAnimationDuration = crl::time(120);
} // namespace
SuggestionsWidget::SuggestionsWidget(QWidget *parent)
: RpWidget(parent)
, _oneWidth(st::emojiSuggestionSize)
, _padding(st::emojiSuggestionsPadding) {
resize(
_oneWidth + _padding.left() + _padding.right(),
_oneWidth + _padding.top() + _padding.bottom());
setMouseTracking(true);
}
rpl::producer<bool> SuggestionsWidget::toggleAnimated() const {
return _toggleAnimated.events();
}
rpl::producer<QString> SuggestionsWidget::triggered() const {
return _triggered.events();
}
void SuggestionsWidget::showWithQuery(const QString &query, bool force) {
if (!force && (_query == query)) {
return;
}
_query = query;
auto rows = getRowsByQuery();
if (rows.empty()) {
_toggleAnimated.fire(false);
}
clearSelection();
setPressed(-1);
_rows = std::move(rows);
resizeToRows();
update();
Ui::PostponeCall(this, [=] {
if (!_rows.empty()) {
_toggleAnimated.fire(true);
}
});
}
void SuggestionsWidget::selectFirstResult() {
if (!_rows.empty() && _selected < 0) {
setSelected(0);
}
}
SuggestionsWidget::Row::Row(
not_null<EmojiPtr> emoji,
const QString &replacement)
: emoji(emoji)
, replacement(replacement) {
}
auto SuggestionsWidget::getRowsByQuery() const -> std::vector<Row> {
if (_query.isEmpty()) {
return {};
}
const auto middle = (_query[0] == ':');
const auto real = middle ? _query.mid(1) : _query;
const auto simple = [&] {
if (!middle || _query.size() > 2) {
return false;
}
// Suggest :D and :-P only as exact matches.
return ranges::none_of(_query, [](QChar ch) { return ch.isLower(); });
}();
const auto exact = !middle || simple;
const auto list = Core::App().emojiKeywords().query(real, exact);
if (list.empty()) {
return {};
}
using Entry = ChatHelpers::EmojiKeywords::Result;
auto result = ranges::view::all(
list
) | ranges::view::transform([](const Entry &result) {
return Row(result.emoji, result.replacement);
}) | ranges::to_vector;
auto lastRecent = begin(result);
const auto &recent = GetRecentEmoji();
for (const auto &item : recent) {
const auto emoji = item.first->original()
? item.first->original()
: item.first;
const auto it = ranges::find(result, emoji, [](const Row &row) {
return row.emoji.get();
});
if (it > lastRecent && it != end(result)) {
std::rotate(lastRecent, it, it + 1);
++lastRecent;
}
}
for (auto &item : result) {
item.emoji = [&] {
const auto result = item.emoji;
const auto &variants = cEmojiVariants();
const auto i = result->hasVariants()
? variants.constFind(result->nonColoredId())
: variants.cend();
return (i != variants.cend())
? result->variant(i.value())
: result.get();
}();
}
return result;
}
void SuggestionsWidget::resizeToRows() {
const auto count = int(_rows.size());
const auto scrolled = (count > kMaxNonScrolledEmoji);
const auto fullWidth = count * _oneWidth;
const auto newWidth = scrolled
? st::emojiSuggestionsScrolledWidth
: fullWidth;
_scrollMax = std::max(0, fullWidth - newWidth);
if (_scrollValue > _scrollMax || scrollCurrent() > _scrollMax) {
scrollTo(std::min(_scrollValue, _scrollMax));
}
resize(_padding.left() + newWidth + _padding.right(), height());
update();
}
bool SuggestionsWidget::eventHook(QEvent *e) {
if (e->type() == QEvent::Wheel) {
selectByMouse(QCursor::pos());
if (_selected >= 0 && _pressed < 0) {
scrollByWheelEvent(static_cast<QWheelEvent*>(e));
}
}
return RpWidget::eventHook(e);
}
void SuggestionsWidget::scrollByWheelEvent(not_null<QWheelEvent*> e) {
const auto horizontal = (e->angleDelta().x() != 0)
|| (e->orientation() == Qt::Horizontal);
const auto vertical = (e->angleDelta().y() != 0)
|| (e->orientation() == Qt::Vertical);
const auto current = scrollCurrent();
const auto scroll = [&] {
if (horizontal) {
const auto delta = e->pixelDelta().x()
? e->pixelDelta().x()
: e->angleDelta().x();
return snap(current - ((rtl() ? -1 : 1) * delta), 0, _scrollMax);
} else if (vertical) {
const auto delta = e->pixelDelta().y()
? e->pixelDelta().y()
: e->angleDelta().y();
return snap(current - delta, 0, _scrollMax);
}
return current;
}();
if (current != scroll) {
scrollTo(scroll);
if (!_lastMousePosition) {
_lastMousePosition = QCursor::pos();
}
selectByMouse(*_lastMousePosition);
update();
}
}
void SuggestionsWidget::paintEvent(QPaintEvent *e) {
Painter p(this);
const auto clip = e->rect();
p.fillRect(clip, st::boxBg);
const auto shift = innerShift();
p.translate(-shift);
const auto paint = clip.translated(shift);
const auto from = std::max(paint.x(), 0) / _oneWidth;
const auto till = std::min(
(paint.x() + paint.width() + _oneWidth - 1) / _oneWidth,
int(_rows.size()));
const auto selected = (_pressed >= 0)
? _pressed
: _selectedAnimation.value(_selected);
if (selected > -1.) {
App::roundRect(
p,
QRect(selected * _oneWidth, 0, _oneWidth, _oneWidth),
st::emojiPanHover,
StickerHoverCorners);
}
for (auto i = from; i != till; ++i) {
const auto &row = _rows[i];
const auto emoji = row.emoji;
const auto esize = Ui::Emoji::GetSizeLarge();
const auto x = i * _oneWidth;
const auto y = 0;
Ui::Emoji::Draw(
p,
emoji,
esize,
x + (_oneWidth - (esize / cIntRetinaFactor())) / 2,
y + (_oneWidth - (esize / cIntRetinaFactor())) / 2);
}
paintFadings(p);
}
void SuggestionsWidget::paintFadings(Painter &p) const {
const auto scroll = scrollCurrent();
const auto o_left = snap(
scroll / float64(st::emojiSuggestionsFadeAfter),
0.,
1.);
const auto shift = innerShift();
if (o_left > 0.) {
p.setOpacity(o_left);
const auto rect = myrtlrect(
shift.x(),
0,
st::emojiSuggestionsFadeLeft.width(),
height());
st::emojiSuggestionsFadeLeft.fill(p, rect);
p.setOpacity(1.);
}
const auto o_right = snap(
(_scrollMax - scroll) / float64(st::emojiSuggestionsFadeAfter),
0.,
1.);
if (o_right > 0.) {
p.setOpacity(o_right);
const auto rect = myrtlrect(
shift.x() + width() - st::emojiSuggestionsFadeRight.width(),
0,
st::emojiSuggestionsFadeRight.width(),
height());
st::emojiSuggestionsFadeRight.fill(p, rect);
p.setOpacity(1.);
}
}
void SuggestionsWidget::keyPressEvent(QKeyEvent *e) {
handleKeyEvent(e->key());
}
bool SuggestionsWidget::handleKeyEvent(int key) {
if (key == Qt::Key_Enter || key == Qt::Key_Return) {
return triggerSelectedRow();
} else if (key == Qt::Key_Tab) {
if (_selected < 0 || _selected >= _rows.size()) {
setSelected(0);
}
return triggerSelectedRow();
} else if (_rows.empty()
|| (key != Qt::Key_Up
&& key != Qt::Key_Down
&& key != Qt::Key_Left
&& key != Qt::Key_Right)) {
return false;
}
const auto delta = (key == Qt::Key_Down || key == Qt::Key_Right)
? 1
: -1;
if (delta < 0 && _selected < 0) {
return false;
}
auto start = _selected;
if (start < 0 || start >= _rows.size()) {
start = (delta > 0) ? (_rows.size() - 1) : 0;
}
auto newSelected = start + delta;
if (newSelected < 0) {
newSelected = -1;
} else if (newSelected >= _rows.size()) {
newSelected -= _rows.size();
}
_mouseSelection = false;
_lastMousePosition = std::nullopt;
setSelected(newSelected, anim::type::normal);
return true;
}
void SuggestionsWidget::setSelected(int selected, anim::type animated) {
if (selected >= _rows.size()) {
selected = -1;
}
if (animated == anim::type::normal) {
_selectedAnimation.start(
[=] { update(); },
_selected,
selected,
kAnimationDuration,
anim::sineInOut);
if (_scrollMax > 0) {
const auto selectedMax = int(_rows.size()) - 3;
const auto selectedForScroll = std::min(
std::max(selected, 1) - 1,
selectedMax);
scrollTo((_scrollMax * selectedForScroll) / selectedMax, animated);
}
} else if (_selectedAnimation.animating()) {
_selectedAnimation.stop();
update();
}
if (_selected != selected) {
updateSelectedItem();
_selected = selected;
updateSelectedItem();
}
}
int SuggestionsWidget::scrollCurrent() const {
return _scrollAnimation.value(_scrollValue);
}
void SuggestionsWidget::scrollTo(int value, anim::type animated) {
if (animated == anim::type::instant) {
_scrollAnimation.stop();
} else {
_scrollAnimation.start(
[=] { update(); },
_scrollValue,
value,
kAnimationDuration,
anim::sineInOut);
}
_scrollValue = value;
update();
}
void SuggestionsWidget::stopAnimations() {
_scrollValue = _scrollAnimation.value(_scrollValue);
_scrollAnimation.stop();
}
void SuggestionsWidget::setPressed(int pressed) {
if (pressed >= _rows.size()) {
pressed = -1;
}
if (_pressed != pressed) {
_pressed = pressed;
if (_pressed >= 0) {
_mousePressPosition = QCursor::pos();
}
}
}
void SuggestionsWidget::clearMouseSelection() {
if (_mouseSelection) {
clearSelection();
}
}
void SuggestionsWidget::clearSelection() {
_mouseSelection = false;
_lastMousePosition = std::nullopt;
setSelected(-1);
}
void SuggestionsWidget::updateItem(int index) {
if (index >= 0 && index < _rows.size()) {
update(
_padding.left() + index * _oneWidth - scrollCurrent(),
_padding.top(),
_oneWidth,
_oneWidth);
}
}
void SuggestionsWidget::updateSelectedItem() {
updateItem(_selected);
}
QRect SuggestionsWidget::inner() const {
return QRect(0, 0, _rows.size() * _oneWidth, _oneWidth);
}
QPoint SuggestionsWidget::innerShift() const {
return QPoint(scrollCurrent() - _padding.left(), -_padding.top());
}
QPoint SuggestionsWidget::mapToInner(QPoint globalPosition) const {
return mapFromGlobal(globalPosition) + innerShift();
}
void SuggestionsWidget::mouseMoveEvent(QMouseEvent *e) {
const auto globalPosition = e->globalPos();
if (_dragScrollStart >= 0) {
const auto delta = (_mousePressPosition.x() - globalPosition.x());
const auto scroll = snap(
_dragScrollStart + (rtl() ? -1 : 1) * delta,
0,
_scrollMax);
if (scrollCurrent() != scroll) {
scrollTo(scroll);
update();
}
return;
} else if ((_pressed >= 0)
&& (_scrollMax > 0)
&& ((_mousePressPosition - globalPosition).manhattanLength()
>= QApplication::startDragDistance())) {
_dragScrollStart = scrollCurrent();
_mousePressPosition = globalPosition;
scrollTo(_dragScrollStart);
}
if (inner().contains(mapToInner(globalPosition))) {
if (!_lastMousePosition) {
_lastMousePosition = globalPosition;
return;
} else if (!_mouseSelection
&& *_lastMousePosition == globalPosition) {
return;
}
selectByMouse(globalPosition);
} else {
clearMouseSelection();
}
}
void SuggestionsWidget::selectByMouse(QPoint globalPosition) {
_mouseSelection = true;
_lastMousePosition = globalPosition;
const auto p = mapToInner(globalPosition);
const auto selected = (p.x() >= 0) ? (p.x() / _oneWidth) : -1;
setSelected((selected >= 0 && selected < _rows.size()) ? selected : -1);
}
void SuggestionsWidget::mousePressEvent(QMouseEvent *e) {
selectByMouse(e->globalPos());
if (_selected >= 0) {
setPressed(_selected);
}
}
void SuggestionsWidget::mouseReleaseEvent(QMouseEvent *e) {
if (_pressed >= 0) {
const auto pressed = _pressed;
setPressed(-1);
if (_dragScrollStart >= 0) {
_dragScrollStart = -1;
} else if (pressed == _selected) {
triggerRow(_rows[_selected]);
}
}
}
bool SuggestionsWidget::triggerSelectedRow() const {
if (_selected >= 0) {
triggerRow(_rows[_selected]);
return true;
}
return false;
}
void SuggestionsWidget::triggerRow(const Row &row) const {
_triggered.fire(row.emoji->text());
}
void SuggestionsWidget::enterEventHook(QEvent *e) {
if (!inner().contains(mapToInner(QCursor::pos()))) {
clearMouseSelection();
}
return TWidget::enterEventHook(e);
}
void SuggestionsWidget::leaveEventHook(QEvent *e) {
clearMouseSelection();
return TWidget::leaveEventHook(e);
}
SuggestionsController::SuggestionsController(
not_null<QWidget*> outer,
not_null<QTextEdit*> field,
not_null<Main::Session*> session,
const Options &options)
: _field(field)
, _session(session)
, _showExactTimer([=] { showWithQuery(getEmojiQuery()); })
, _options(options) {
_container = base::make_unique_q<InnerDropdown>(
outer,
st::emojiSuggestionsDropdown);
_container->setAutoHiding(false);
_suggestions = _container->setOwnedWidget(
object_ptr<Ui::Emoji::SuggestionsWidget>(_container));
setReplaceCallback(nullptr);
const auto fieldCallback = [=](not_null<QEvent*> event) {
return fieldFilter(event)
? base::EventFilterResult::Cancel
: base::EventFilterResult::Continue;
};
_fieldFilter.reset(base::install_event_filter(_field, fieldCallback));
const auto outerCallback = [=](not_null<QEvent*> event) {
return outerFilter(event)
? base::EventFilterResult::Cancel
: base::EventFilterResult::Continue;
};
_outerFilter.reset(base::install_event_filter(outer, outerCallback));
QObject::connect(
_field,
&QTextEdit::textChanged,
_container,
[=] { handleTextChange(); });
QObject::connect(
_field,
&QTextEdit::cursorPositionChanged,
_container,
[=] { handleCursorPositionChange(); });
_suggestions->toggleAnimated(
) | rpl::start_with_next([=](bool visible) {
suggestionsUpdated(visible);
}, _lifetime);
_suggestions->triggered(
) | rpl::start_with_next([=](QString replacement) {
replaceCurrent(replacement);
}, _lifetime);
Core::App().emojiKeywords().refreshed(
) | rpl::start_with_next([=] {
_keywordsRefreshed = true;
if (!_showExactTimer.isActive()) {
showWithQuery(_lastShownQuery);
}
}, _lifetime);
updateForceHidden();
handleTextChange();
}
SuggestionsController *SuggestionsController::Init(
not_null<QWidget*> outer,
not_null<Ui::InputField*> field,
not_null<Main::Session*> session,
const Options &options) {
const auto result = Ui::CreateChild<SuggestionsController>(
field.get(),
outer,
field->rawTextEdit(),
session,
options);
result->setReplaceCallback([=](
int from,
int till,
const QString &replacement) {
field->commitInstantReplacement(from, till, replacement);
});
return result;
}
void SuggestionsController::setReplaceCallback(
Fn<void(
int from,
int till,
const QString &replacement)> callback) {
if (callback) {
_replaceCallback = std::move(callback);
} else {
_replaceCallback = [=](int from, int till, const QString &replacement) {
auto cursor = _field->textCursor();
cursor.setPosition(from);
cursor.setPosition(till, QTextCursor::KeepAnchor);
cursor.insertText(replacement);
};
}
}
void SuggestionsController::handleTextChange() {
if (Core::App().settings().suggestEmoji()
&& _field->textCursor().position() > 0) {
Core::App().emojiKeywords().refresh();
}
_ignoreCursorPositionChange = true;
InvokeQueued(_container, [=] { _ignoreCursorPositionChange = false; });
const auto query = getEmojiQuery();
if (query.isEmpty() || _textChangeAfterKeyPress) {
const auto exact = (!query.isEmpty() && query[0] != ':');
if (exact) {
const auto hidden = _container->isHidden()
|| _container->isHiding();
_showExactTimer.callOnce(hidden ? kShowExactDelay : 0);
} else {
showWithQuery(query);
_suggestions->selectFirstResult();
}
}
}
void SuggestionsController::showWithQuery(const QString &query) {
_showExactTimer.cancel();
const auto force = base::take(_keywordsRefreshed);
_lastShownQuery = query;
_suggestions->showWithQuery(_lastShownQuery, force);
}
QString SuggestionsController::getEmojiQuery() {
if (!Core::App().settings().suggestEmoji()) {
return QString();
}
const auto cursor = _field->textCursor();
if (cursor.hasSelection()) {
return QString();
}
const auto modernLimit = Core::App().emojiKeywords().maxQueryLength();
const auto legacyLimit = GetSuggestionMaxLength();
const auto position = cursor.position();
const auto findTextPart = [&] {
auto document = _field->document();
auto block = document->findBlock(position);
for (auto i = block.begin(); !i.atEnd(); ++i) {
auto fragment = i.fragment();
if (!fragment.isValid()) continue;
auto from = fragment.position();
auto till = from + fragment.length();
if (from >= position || till < position) {
continue;
}
if (fragment.charFormat().isImageFormat()) {
continue;
}
_queryStartPosition = from;
return fragment.text();
}
return QString();
};
const auto text = findTextPart();
if (text.isEmpty()) {
return QString();
}
const auto length = position - _queryStartPosition;
for (auto i = length; i != 0;) {
if (text[--i] == ':') {
const auto previous = (i > 0) ? text[i - 1] : QChar(0);
if (i > 0 && (previous.isLetter() || previous.isDigit())) {
return QString();
} else if (i + 1 == length || text[i + 1].isSpace()) {
return QString();
}
_queryStartPosition += i + 2;
return text.mid(i, length - i);
}
if (length - i > legacyLimit && length - i > modernLimit) {
return QString();
}
}
// Exact query should be full input field value.
const auto end = [&] {
auto cursor = _field->textCursor();
cursor.movePosition(QTextCursor::End);
return cursor.position();
}();
if (!_options.suggestExactFirstWord
|| !length
|| text[0].isSpace()
|| (length > modernLimit)
|| (_queryStartPosition != 0)
|| (position != end)) {
return QString();
}
return text;
}
void SuggestionsController::replaceCurrent(const QString &replacement) {
const auto suggestion = getEmojiQuery();
if (suggestion.isEmpty()) {
showWithQuery(QString());
} else {
const auto cursor = _field->textCursor();
const auto position = cursor.position();
const auto from = position - suggestion.size();
_replaceCallback(from, position, replacement);
}
}
void SuggestionsController::handleCursorPositionChange() {
InvokeQueued(_container, [=] {
if (_ignoreCursorPositionChange) {
return;
}
showWithQuery(QString());
});
}
void SuggestionsController::suggestionsUpdated(bool visible) {
_shown = visible;
if (_shown) {
_container->resizeToContent();
updateGeometry();
if (!_forceHidden) {
if (_container->isHidden() || _container->isHiding()) {
raise();
}
_container->showAnimated(
Ui::PanelAnimation::Origin::BottomLeft);
}
} else if (!_forceHidden) {
_container->hideAnimated();
}
}
void SuggestionsController::updateGeometry() {
auto cursor = _field->textCursor();
cursor.setPosition(_queryStartPosition);
auto aroundRect = _field->cursorRect(cursor);
aroundRect.setTopLeft(_field->viewport()->mapToGlobal(aroundRect.topLeft()));
aroundRect.setTopLeft(_container->parentWidget()->mapFromGlobal(aroundRect.topLeft()));
auto boundingRect = _container->parentWidget()->rect();
auto origin = rtl() ? PanelAnimation::Origin::BottomRight : PanelAnimation::Origin::BottomLeft;
auto point = rtl() ? (aroundRect.topLeft() + QPoint(aroundRect.width(), 0)) : aroundRect.topLeft();
const auto padding = st::emojiSuggestionsDropdown.padding;
const auto shift = std::min(_container->width() - padding.left() - padding.right(), st::emojiSuggestionSize) / 2;
point -= rtl() ? QPoint(_container->width() - padding.right() - shift, _container->height()) : QPoint(padding.left() + shift, _container->height());
if (rtl()) {
if (point.x() < boundingRect.x()) {
point.setX(boundingRect.x());
}
if (point.x() + _container->width() > boundingRect.x() + boundingRect.width()) {
point.setX(boundingRect.x() + boundingRect.width() - _container->width());
}
} else {
if (point.x() + _container->width() > boundingRect.x() + boundingRect.width()) {
point.setX(boundingRect.x() + boundingRect.width() - _container->width());
}
if (point.x() < boundingRect.x()) {
point.setX(boundingRect.x());
}
}
if (point.y() < boundingRect.y()) {
point.setY(aroundRect.y() + aroundRect.height());
origin = (origin == PanelAnimation::Origin::BottomRight) ? PanelAnimation::Origin::TopRight : PanelAnimation::Origin::TopLeft;
}
_container->move(point);
}
void SuggestionsController::updateForceHidden() {
_forceHidden = !_field->isVisible() || !_field->hasFocus();
if (_forceHidden) {
_container->hideFast();
} else if (_shown) {
_container->showFast();
}
}
bool SuggestionsController::fieldFilter(not_null<QEvent*> event) {
auto type = event->type();
switch (type) {
case QEvent::Move:
case QEvent::Resize: {
if (_shown) {
updateGeometry();
}
} break;
case QEvent::Show:
case QEvent::ShowToParent:
case QEvent::Hide:
case QEvent::HideToParent:
case QEvent::FocusIn:
case QEvent::FocusOut: {
updateForceHidden();
} break;
case QEvent::KeyPress: {
const auto key = static_cast<QKeyEvent*>(event.get())->key();
switch (key) {
case Qt::Key_Enter:
case Qt::Key_Return:
case Qt::Key_Tab:
case Qt::Key_Up:
case Qt::Key_Down:
case Qt::Key_Left:
case Qt::Key_Right:
if (_shown && !_forceHidden) {
return _suggestions->handleKeyEvent(key);
}
break;
case Qt::Key_Escape:
if (_shown && !_forceHidden) {
showWithQuery(QString());
return true;
}
break;
}
_textChangeAfterKeyPress = true;
InvokeQueued(_container, [=] { _textChangeAfterKeyPress = false; });
} break;
}
return false;
}
bool SuggestionsController::outerFilter(not_null<QEvent*> event) {
auto type = event->type();
switch (type) {
case QEvent::Move:
case QEvent::Resize: {
// updateGeometry uses not only container geometry, but also
// container children geometries that will be updated later.
InvokeQueued(_container, [=] {
if (_shown) {
updateGeometry();
}
});
} break;
}
return false;
}
void SuggestionsController::raise() {
_container->raise();
}
} // namespace Emoji
} // namespace Ui